Since I Left You is the debut studio album by Australian electronic music group The Avalanches, released on 27 November 2000. It was issued on Modular Recordings and produced by The Avalanches' members Robbie Chater and Darren Seltmann (under the pseudonym Bobbydazzler). The album uses sampling extensively, containing an estimated 3,500 samples from various genres of music. The album was created in two separate near-identical studios by Chater and Seltmann, exchanging audio mixes of records they sampled.

After the album's positive reception in Australia, the duo considered an international release – its date was held back until 2001 in both the United Kingdom and North America and appeared in slightly altered forms. The delay and changes occurred so that the group could obtain permission to use the samples or use replacements. Five singles were released on the album, "Electricity", "Frontier Psychiatrist", "Since I Left You", "Radio" and "A Different Feeling". The group promoted the album by organizing headlining tours in Australia, Europe and the United States.

"Since I Left You" is a song by Australian electronic dance music group The Avalanches. It was released as the third single from the group's debut studio album of the same name on 5 February 2001. Produced by group members Robbie Chater and Darren Seltmann, "Since I Left You" utilizes numerous samples of other artists' material. The song's chorus is a prominent vocal sample of The Main Attraction's "Everyday" (1967).

The song was positively reviewed by music critics, who praised its sample-based production and upbeat atmosphere; several publications named it one of the best singles of 2001. "Since I Left You" also placed in the singles charts of Australia and several European countries. A surrealistic music video for the song was directed by Rob Leggatt and Leigh Marling, and depicts two miners who find a mysterious passage into a dance studio. It won the group an MTV Europe Music Award for Best Video.

Background and composition

The Avalanches started working on their debut album in 1999. Production was handled by group members Robbie Chater and Darren Seltmann, who composed the album's songs by sampling music from vinyl records and manipulating them using Yamaha Promix 01 and Akai S2000 samplers. The song "Since I Left You" was recorded by the group at Soft Light Bistro. Its final mixing process was carried out at the Sing Sing recording studio by Chater, Seltmann and Tony Espie.